How popular is this St. Louis to Baltimore flight route?

Within the past month, 26 users have taken a look at flights from Lambert-St Louis to Baltimore/Washington.

How long is the flight from St. Louis to Baltimore?

There are many flights that can get you from St. Louis to Baltimore in 6h 44m. Fly via Frontier to get the fastest option. The distance between St. Louis and Baltimore is about 736 mi.

What are the cheapest airlines flying from St. Louis to Baltimore round-trip?

Frontier, at $124, was found to be the cheapest airline from St. Louis to Baltimore.Alternate airlines to your destination round-trip include American Airlines and Delta. Frontier is 62% cheaper than the average price of flights available within the next 90 days to this destination.

In terms of precipitation, rainfall in Baltimore ranges from 2.9 - 4.1 inches per month. July is typically the wettest month, when rainfall can reach 4.1 in. February is typically the driest time to visit Baltimore when rainfall is around 2.9 in.

If weather is an important factor for your trip to Baltimore, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 77.0 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 33.8 F).

What are the cheapest flights from St. Louis to Baltimore?

The cheapest flight price from St. Louis to Baltimore is $99. On average you can expect to pay $337. The most popular route, (Lambert-St Louis - Baltimore/Washington), can usually be booked for $160.

What are the most popular airlines that fly from St. Louis to Baltimore?

American Airlines, Delta and Frontier are the most popular airlines when flying from St. Louis to Baltimore.

What is the cheapest day to fly round-trip from St. Louis to Baltimore?

Departing on a Monday is a good option for securing a great price. You can expect to save up to 27% when planning your travel around this day of the week.

How far in advance should I book a flight from St. Louis to Baltimore?

Travelers have found it’s best to book a flight 52 days in advance to save up to 233% compared to booking the same week of travel. As your travel date approaches, the cost of this flight route may potentially increase. While opting to book 52 days out may not be an option for all, there are still additional ways to secure a deal in the near future. You might find a flight from St. Louis to Baltimore 1-2 weeks in advance for as low as $440, or $584 for flights within the next 24 hours.

What is the cheapest month to fly from St. Louis to Baltimore?

August can be a great time to fly to Baltimore from St. Louis with a flight ticket averaging about $296. Cheapflights users have found deals in the month of August for as cheap as $125. The most expensive prices can be found in the month of March.

What airports do I use to fly from St. Louis to Baltimore?

Baltimore/Washington is the airport most travelers will use when flying to Baltimore from Lambert-St Louis. Booking flights from Lambert-St Louis (STL) to Baltimore/Washington (BWI) should be relatively easy as there are 4 daily flights to Baltimore from 4 different airlines. 1h 55m is how long a flight from St. Louis to Baltimore/Washington will take if you book a nonstop flight.

Can I find deals for flights from St. Louis to Baltimore that include hotel bookings?

Yes. In addition to deals on St. Louis to Baltimore flights, Cheapflights offers vacation packages that include both flights and hotel.

How can I find direct flights from St. Louis to Baltimore?

After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from St. Louis to Baltimore.

Can I find deals for business class flights from St. Louis to Baltimore?

Yes. Cheapflights offers flight deals from St. Louis to Baltimore by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

$73+ Flights from St. Louis to Baltimore

Q: How much does it cost to fly round-trip from St. Louis to Baltimore?

Airfare is below average for this route at the moment. St. Louis to Baltimore flights typically cost between $268 and $456 in September. The cheapest round-trip price found within the last 3 days was $144 on Frontier (Sep 11-Sep 14).

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Find cheap flights from St. Louis to Baltimore with Cheapflights

1. Tell us where you want to go

Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”

2. Select your favorite providers

We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.

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Cheapflights Tip: The best prices from Lambert-St Louis to Baltimore/Washington are usually found in September or March, booked 75 days in advance, depart on a Tuesday or Wednesday and return on a Tuesday

Cheap flight deals from St. Louis to Baltimore

Round-trip from	$144 (Priceline)
One-way from	$73 (Priceline)
Popular in	December
Cheapest in	September
Average price	$378

From Lambert-St Louis to Baltimore/Washington

Search Deals

One-way flight from Lambert-St Louis to Baltimore/Washington

Search Deals

Highest demand for flights based on searches. 11% potential increase in price ($43 potential increase over avg. RT price).

Search Deals

Cheapest flight prices on average. 2% potential price decrease ($7 potential savings vs. average RT price).

Search Deals

Average for round-trip flights in August 2025

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Find flight deals from St. Louis to Baltimore

Cheapest flights from St. Louis to Baltimore
Explore the most affordable flight options available from St. Louis to Baltimore. Find the lowest fares from popular airlines and budget airlines, with prices last updated on August 18, 2025.

Thu 9/114:00 pmSTL - BWI

1 stop7h 17mFrontier

Sun 9/146:22 amBWI - STL

1 stop9h 42mFrontier

Deal found 8/17

$144

Thu 9/1810:49 amSTL - BWI

1 stop6h 04mFrontier

Sun 9/216:22 amBWI - STL

1 stop9h 42mFrontier

Deal found 8/17

$159

Fri 9/191:57 pmSTL - BWI

1 stop24h 32mFrontier

Sun 9/216:22 amBWI - STL

1 stop9h 42mFrontier

Deal found 8/17

$160

Thu 11/1312:20 pmSTL - BWI

1 stop10h 34mMultiple Airlines

Sun 11/166:00 amBWI - STL

1 stop5h 12mMultiple Airlines

Deal found 8/15

$164

Thu 11/1311:07 amSTL - BWI

1 stop12h 00mFrontier

Sun 11/166:00 amBWI - STL

1 stop5h 12mFrontier

Deal found 8/16

$165

Fri 10/2411:32 amSTL - BWI

1 stop20h 33mFrontier

Sun 10/266:29 pmBWI - STL

1 stop15h 38mFrontier

Deal found 8/17

$170

Fri 9/51:57 pmSTL - BWI

1 stop24h 32mFrontier

Fri 9/126:27 pmBWI - STL

1 stop15h 39mFrontier

Deal found 8/17

$171

Sat 8/233:02 pmSTL - BWI

1 stop8h 06mFrontier

Mon 8/256:10 amBWI - STL

1 stop7h 46mFrontier

Deal found 8/18

$176

Thu 10/2311:32 amSTL - BWI

1 stop11h 41mMultiple Airlines

Sat 10/256:45 amBWI - STL

1 stop12h 00mMultiple Airlines

Deal found 8/16

$177

Sun 8/312:30 pmSTL - BWI

1 stop6h 39mMultiple Airlines

Thu 9/46:22 amBWI - STL

1 stop9h 42mMultiple Airlines

Deal found 8/16

$180

Fri 10/39:32 pmSTL - BWI

1 stop16h 45mFrontier

Sun 10/58:14 pmBWI - STL

1 stop19h 50mFrontier

Deal found 8/16

$181

Best flights from St. Louis to Baltimore
Discover carefully curated flight deals from St. Louis to Baltimore that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated August 18, 2025.

Fri 11/144:29 pmSTL - BWI

1 stop6h 44mFrontier

Sun 11/166:00 amBWI - STL

1 stop5h 12mFrontier

Deal found 8/15

$144

Thu 9/114:00 pmSTL - BWI

1 stop7h 17mFrontier

Mon 9/156:22 amBWI - STL

1 stop9h 42mFrontier

Deal found 8/18

$144

Mon 9/154:00 pmSTL - BWI

1 stop7h 17mFrontier

Mon 9/226:22 amBWI - STL

1 stop9h 42mFrontier

Deal found 8/16

$144

Thu 9/114:00 pmSTL - BWI

1 stop7h 17mFrontier

Sun 9/146:22 amBWI - STL

1 stop9h 42mFrontier

Deal found 8/17

$144

Mon 9/224:00 pmSTL - BWI

1 stop7h 17mFrontier

Thu 9/256:22 amBWI - STL

1 stop9h 42mFrontier

Deal found 8/16

$144

Thu 9/2510:49 amSTL - BWI

1 stop6h 04mFrontier

Mon 9/296:22 amBWI - STL

1 stop9h 42mFrontier

Deal found 8/16

$159

Thu 9/1810:49 amSTL - BWI

1 stop6h 04mFrontier

Mon 9/226:22 amBWI - STL

1 stop9h 42mFrontier

Deal found 8/16

$159

Thu 9/1810:49 amSTL - BWI

1 stop6h 04mFrontier

Sun 9/216:22 amBWI - STL

1 stop9h 42mFrontier

Deal found 8/16

$159

Last-minute flights from St. Louis to Baltimore
Discover last-minute flight deals from St. Louis to Baltimore. Data last updated August 18, 2025 and is based on user searches.

Fri 8/222:01 pmSTL - BWI

1 stop9h 18mFrontier

Sun 8/246:29 pmBWI - STL

1 stop20h 52mFrontier

Deal found 8/15

$191

Sat 8/233:02 pmSTL - BWI

1 stop8h 06mFrontier

Mon 8/256:10 amBWI - STL

1 stop7h 46mFrontier

Deal found 8/18

$176

Sun 8/312:30 pmSTL - BWI

1 stop6h 39mMultiple Airlines

Thu 9/46:22 amBWI - STL

1 stop9h 42mMultiple Airlines

Deal found 8/16

$180

Fri 9/51:57 pmSTL - BWI

1 stop24h 32mFrontier

Fri 9/126:27 pmBWI - STL

1 stop15h 39mFrontier

Deal found 8/17

$171

Thu 9/114:00 pmSTL - BWI

1 stop7h 17mFrontier

Mon 9/156:22 amBWI - STL

1 stop9h 42mFrontier

Deal found 8/18

$144

Thu 9/114:00 pmSTL - BWI

1 stop7h 17mFrontier

Fri 9/196:27 pmBWI - STL

1 stop15h 39mFrontier

Deal found 8/17

$170

Thu 9/114:00 pmSTL - BWI

1 stop7h 17mFrontier

Sun 9/149:59 pmBWI - STL

2 stops18h 05mFrontier

Deal found 8/17

$186

Mon 9/154:00 pmSTL - BWI

1 stop7h 17mFrontier

Mon 9/2212:53 pmBWI - STL

2 stops21h 13mFrontier

Deal found 8/18

$193

Thu 9/1810:49 amSTL - BWI

1 stop6h 04mFrontier

Sun 9/216:22 amBWI - STL

1 stop9h 42mFrontier

Deal found 8/17

$159

Fri 9/191:57 pmSTL - BWI

1 stop24h 32mFrontier

Sun 9/216:22 amBWI - STL

1 stop9h 42mFrontier

Deal found 8/17

$160

One-way flights from St. Louis to Baltimore
Search for one-way flight options from St. Louis to Baltimore. Find affordable one-way fares based on user searches. Data last updated August 18, 2025.

Mon 9/224:00 pmSTL - BWI

1 stop7h 17mFrontier

Deal found 8/16

$73

Thu 9/44:00 pmSTL - BWI

1 stop7h 17mFrontier

Deal found 8/17

$77

Mon 10/64:00 pmSTL - BWI

1 stop7h 53mFrontier

Deal found 8/16

$78

Sun 9/1410:39 amSTL - BWI

1 stop6h 21mFrontier

Deal found 8/16

$79

Sat 10/184:33 pmSTL - BWI

1 stop15h 01mFrontier

Deal found 8/17

$84

Tue 11/410:54 amSTL - BWI

1 stop11h 33mSpirit Airlines

Deal found 8/18

$90

Tue 10/1410:57 amSTL - BWI

1 stop11h 30mSpirit Airlines

Deal found 8/17

$91

Sat 9/207:55 pmSTL - BWI

1 stop20h 47mFrontier

Deal found 8/15

$95

Sun 9/214:00 pmSTL - BWI

1 stop23h 46mMultiple Airlines

Deal found 8/16

$96

Fri 10/39:32 pmSTL - BWI

1 stop16h 45mFrontier

Deal found 8/17

$105

Cheapflights Fare Finder

Use the filters below to find and compare flights from St. Louis to Baltimore that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

St. LouisBaltimore

STL - BWI

STLBWI

Lambert-St Louis

Fri 11/14

4:29 pm-12:13 am

1 stop6h 44m

Baltimore/Washington

Sun 11/16

6:00 am-10:12 am

1 stop5h 12m

$144

St. LouisBaltimore

STL - BWI

STLBWI

Lambert-St Louis

Thu 9/11

4:00 pm-12:17 am

1 stop7h 17m

Baltimore/Washington

Mon 9/15

6:22 am-3:04 pm

1 stop9h 42m

$144

St. LouisBaltimore

STL - BWI

STLBWI

Lambert-St Louis

Mon 9/15

4:00 pm-12:17 am

1 stop7h 17m

Baltimore/Washington

Mon 9/22

6:22 am-3:04 pm

1 stop9h 42m

$144

St. LouisBaltimore

STL - BWI

STLBWI

Lambert-St Louis

Thu 9/11

4:00 pm-12:17 am

1 stop7h 17m

Baltimore/Washington

Sun 9/14

6:22 am-3:04 pm

1 stop9h 42m

$144

St. LouisBaltimore

STL - BWI

STLBWI

Lambert-St Louis

Mon 9/22

4:00 pm-12:17 am

1 stop7h 17m

Baltimore/Washington

Thu 9/25

6:22 am-3:04 pm

1 stop9h 42m

$144

St. LouisBaltimore

STL - BWI

STLBWI

Lambert-St Louis

Thu 9/25

10:49 am-5:53 pm

1 stop6h 04m

Baltimore/Washington

Mon 9/29

6:22 am-3:04 pm

1 stop9h 42m

$159

St. LouisBaltimore

STL - BWI

STLBWI

Lambert-St Louis

Thu 9/18

10:49 am-5:53 pm

1 stop6h 04m

Baltimore/Washington

Mon 9/22

6:22 am-3:04 pm

1 stop9h 42m

$159

St. LouisBaltimore

STL - BWI

STLBWI

Lambert-St Louis

Thu 9/18

10:49 am-5:53 pm

1 stop6h 04m

Baltimore/Washington

Sun 9/21

6:22 am-3:04 pm

1 stop9h 42m

$159

St. LouisBaltimore

STL - BWI

STLBWI

Lambert-St Louis

Mon 9/15

4:00 pm-12:17 am

1 stop7h 17m

$73

St. LouisBaltimore

STL - BWI

STLBWI

Lambert-St Louis

Fri 11/7

4:29 pm-12:13 am

1 stop6h 44m

$73

Flights are sorted by cheapest round-trip flights first.

Deals found on 8/16

Showing 1-10 of 15 results

The best insider tips for St. Louis to Baltimore flights

Cheapflights partnered with top experts to bring you the best recommendations for your St. Louis to Baltimore trip

Airports

STL

Expect security screening at STL to take 5-10 minutes during off-peak times. Check real-time wait times online before heading to the airport.

BWI

Take the MTA Light Rail from BWI to downtown Baltimore for a quick and easy trip. Shuttles connect to the MARC and Amtrak station.

Our travel experts

Emily Zemler

Expert on BWI

Taryn White

Expert on STL

Best time to book a flight from St. Louis to Baltimore

Have a flexible travel schedule? Discover the best time to fly to Baltimore from St. Louis with our price prediction graph.

Estimated round-trip price

Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from St. Louis to Baltimore

How far ahead should I book a flight from St. Louis to Baltimore?

Booking 75 days in advance of your planned departure date is, on average, the best time to get cheap flights from St. Louis to Baltimore. The general trend is that the closer you book to the departure date, the more expensive your flight will be.

What is the cheapest month to book a flight from St. Louis to Baltimore?

Currently, August is the cheapest month in which you can book a flight from St. Louis to Baltimore (average of $241). Flying from St. Louis to Baltimore in March is currently the most expensive (average of $290). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

What is the cheapest time of day to fly from STL to BWI?

It’s typically best to fly out from St. Louis to Baltimore at noon. Doing so could potentially save you 3% on the flight price compared to flying in the morning, which is usually more expensive.

What is the cheapest day to fly from St. Louis to Baltimore?

Travelers seeking maximum savings on their St. Louis to Baltimore flight should consider departing on Thursday at noon when fares are most often at their lowest. Saturday afternoons flights should be avoided if possible as fares are typically the most expensive at this time.

How much does it cost to fly round-trip from St. Louis to Baltimore?

Reviews of airlines servicing Baltimore

Peruse reviews from past customers who have flown with Southwest, Delta, and American Airlines from St. Louis to Baltimore to help guide your decision. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.

Southwest

8.0

Very good

4,246 reviews

Reviews

1 / 20

8.0

Excellent

Walter,Aug 2025

OAK - SAN

Dozens of flights and I've never seen a row's beverages forgotten. I even went back and asked the attendant to check on them and nothing. I really hope it didn't have something to do with the Black mother with her kid in the row. Otherwise it was a typical Southwest flight, rapid boarding, tolerable leg room.

Southwest

8.0

Very good

4,246 reviews

Southwest

8.0

Very good

4,246 reviews

Reviews

1 / 20

8.0

Excellent

Walter,Aug 2025

OAK - SAN

Delta

8.0

Very good

7,981 reviews

Southwest

8.0

Very good

4,246 reviews

Reviews

1 / 20

8.0

Excellent

Walter,Aug 2025

OAK - SAN

American Airlines

7.2

Good

10,000 reviews

Southwest

8.0

Very good

4,246 reviews

Reviews

1 / 20

8.0

Excellent

Walter,Aug 2025

OAK - SAN

Frontier

5.8

Fair

3,212 reviews

Southwest

8.0

Very good

4,246 reviews

Reviews

1 / 20

8.0

Excellent

Walter,Aug 2025

OAK - SAN

Related info for your journey

What airports do I use to fly from St. Louis to Baltimore?
Baltimore/Washington is the airport most travelers will use when flying to Baltimore from Lambert-St Louis. Booking flights from Lambert-St Louis (STL) to Baltimore/Washington (BWI) should be relatively easy as there are 4 daily flights to Baltimore from 4 different airlines. 1h 55m is how long a flight from St. Louis to Baltimore/Washington will take if you book a nonstop flight.
How popular is this St. Louis to Baltimore flight route?
Within the past month, 26 users have taken a look at flights from Lambert-St Louis to Baltimore/Washington.
How long is the flight from St. Louis to Baltimore?
There are many flights that can get you from St. Louis to Baltimore in 6h 44m. Fly via Frontier to get the fastest option. The distance between St. Louis and Baltimore is about 736 mi.
What are the cheapest airlines flying from St. Louis to Baltimore round-trip?
Frontier, at $124, was found to be the cheapest airline from St. Louis to Baltimore.Alternate airlines to your destination round-trip include American Airlines and Delta. Frontier is 62% cheaper than the average price of flights available within the next 90 days to this destination.
What are the cheapest flights from St. Louis to Baltimore?
The cheapest flight price from St. Louis to Baltimore is $99. On average you can expect to pay $337. The most popular route, (Lambert-St Louis - Baltimore/Washington), can usually be booked for $160.
Can I find deals for flights from St. Louis to Baltimore that include hotel bookings?
Yes. In addition to deals on St. Louis to Baltimore flights, Cheapflights offers vacation packages that include both flights and hotel.
How can I find direct flights from St. Louis to Baltimore?
After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from St. Louis to Baltimore.
Can I find deals for business class flights from St. Louis to Baltimore?
Yes. Cheapflights offers flight deals from St. Louis to Baltimore by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.
What is the cheapest month to book a flight from St. Louis to Baltimore?
Currently, August is the cheapest month in which you can book a flight from St. Louis to Baltimore (average of $241). Flying from St. Louis to Baltimore in March is currently the most expensive (average of $290). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

Browse thousands of different options on Cheapflights for your next trip

Alternative routes for St. Louis to Baltimore

Complete your trip

Baltimore car rentals

Washington, D.C. Dulles Intl Airport car rentals

Baltimore/Washington Airport car rentals

Washington, D.C. Reagan-National Airport car rentals

Salisbury car rentals

Downtown car rentals

Inner Harbor car rentals

West Baltimore car rentals

Fells Point car rentals

Mount Vernon car rentals

North Baltimore car rentals

East Baltimore car rentals

Top 4 airlines flying from St. Louis to Baltimore

Airline	Cheapest	Average	Flexibility	On-time
Frontier	Cheapest$124	Average$218	FlexibilityNo cancel fee	On-time62%
Delta	Cheapest$176	Average$290	FlexibilityNo cancel fee	On-timeN/A
American Airlines	Cheapest$176	Average$372	FlexibilityNo cancel fee	On-time71%
Southwest	Cheapest$199	Average$376	FlexibilityNo cancel fee	On-time63%

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$73+ Cheap flights from St. Louis to Baltimore (STL - BWI)

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 9/15. Fares are subject to change and may not be available on all flights or dates of travel.

Find cheap flights from St. Louis to Baltimore with Cheapflights

1. Tell us where you want to go

2. Select your favorite providers

3. Compare prices and book

Cheapflights Tip: The best prices from Lambert-St Louis to Baltimore/Washington are usually found in September or March, booked 75 days in advance, depart on a Tuesday or Wednesday and return on a Tuesday

Cheap flight deals from St. Louis to Baltimore

Round-trip from

One-way from

Popular in

Cheapest in

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Find flight deals from St. Louis to Baltimore

Cheapest flights from St. Louis to BaltimoreExplore the most affordable flight options available from St. Louis to Baltimore. Find the lowest fares from popular airlines and budget airlines, with prices last updated on August 18, 2025.

Explore the most affordable flight options available from St. Louis to Baltimore. Find the lowest fares from popular airlines and budget airlines, with prices last updated on August 18, 2025.

Cheapflights Fare Finder

Use the filters below to find and compare flights from St. Louis to Baltimore that are best for you.

The best insider tips for St. Louis to Baltimore flights

Cheapflights partnered with top experts to bring you the best recommendations for your St. Louis to Baltimore trip

Airports

STL

BWI

Our travel experts

Best time to book a flight from St. Louis to Baltimore

Have a flexible travel schedule? Discover the best time to fly to Baltimore from St. Louis with our price prediction graph.

Cheapflights Insights

Everything you need to know about your flight from St. Louis to Baltimore

How far ahead should I book a flight from St. Louis to Baltimore?

Use this chart to determine the optimal time to book a round-trip flight from St. Louis to Baltimore. Price data was last updated on August 8, 2025.

What is the cheapest month to book a flight from St. Louis to Baltimore?

What is the cheapest time of day to fly from STL to BWI?

Find hourly flight availability from St. Louis to Baltimore. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated August 18, 2025.

What is the cheapest day to fly from St. Louis to Baltimore?

Use this chart to determine the cheapest time to fly round-trip from St. Louis to Baltimore. Price data was last updated on August 17, 2025.

How much does it cost to fly round-trip from St. Louis to Baltimore?

Reviews of airlines servicing Baltimore

Peruse reviews from past customers who have flown with Southwest, Delta, and American Airlines from St. Louis to Baltimore to help guide your decision. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.

Related info for your journey

Find useful and relevant information for your journey from St. Louis to Baltimore. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

What airports do I use to fly from St. Louis to Baltimore?

How popular is this St. Louis to Baltimore flight route?

How long is the flight from St. Louis to Baltimore?

What are the cheapest airlines flying from St. Louis to Baltimore round-trip?

What are the cheapest flights from St. Louis to Baltimore?

Can I find deals for flights from St. Louis to Baltimore that include hotel bookings?

How can I find direct flights from St. Louis to Baltimore?

Can I find deals for business class flights from St. Louis to Baltimore?

What is the cheapest month to book a flight from St. Louis to Baltimore?

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Alternative routes for St. Louis to Baltimore

See prices for flight routes from nearby airports that may be better suited for you.

Top 4 airlines flying from St. Louis to Baltimore

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Cheapest flights from St. Louis to Baltimore
Explore the most affordable flight options available from St. Louis to Baltimore. Find the lowest fares from popular airlines and budget airlines, with prices last updated on August 18, 2025.